package main

import (
	"net"
	"time"
)

type tListener struct {
	net.Listener
	ReadTimeout  time.Duration
	WriteTimeout time.Duration
}

func (l *tListener) Accept() (net.Conn, error) {
	c, err := l.Listener.Accept()
	if err != nil {
		return nil, err
	}
	tc := &tConn{
		Conn:         c,
		ReadTimeout:  l.ReadTimeout,
		WriteTimeout: l.WriteTimeout,
	}
	return tc, nil
}

type tConn struct {
	net.Conn
	ReadTimeout  time.Duration
	WriteTimeout time.Duration
}

func (c *tConn) Read(b []byte) (n int, err error) {
	err = c.Conn.SetReadDeadline(time.Now().Add(c.ReadTimeout))
	if err != nil {
		return 0, err
	}
	n, err = c.Conn.Read(b)
	return
}

func (c *tConn) Write(b []byte) (n int, err error) {
	err = c.Conn.SetWriteDeadline(time.Now().Add(c.WriteTimeout))
	if err != nil {
		return
	}
	n, err = c.Conn.Write(b)
	return
}